African Plant Database

Pycreus macrostachyos (Lam.) J. Raynal
Protologue : Kew Bull. 23: 314 (1969)
Information on the genus : Pycreus
Basionym : Cyperus macrostachyos Lam.
Status for MA : accepted (present)
Status for SA : accepted (present)
Status for TA : accepted (present)
Synonym(s) Homotypic
 Pycreus macrostachyos (Lam.) J. Raynal var. macrostachyos
 Cyperus macrostachyos Lam.
 Pycreus macrostachyos (Lam.) J. Raynal subsp. macrostachyos
Synonym(s) Heterotypic
=*Cyperus expansus Bojer (1837)
=Cyperus flavicomus Vahl
=Cyperus hochstetteri Krauss
=Distimus flavicomus Raf.
=Pycreus albomarginatus Nees
=Cyperus albomarginatus (Mart. & Schrad. ex Nees) Steud.
=Cyperus macrostachyos subsp. tremulus (Poir.) Lye
=Cyperus tremulus Poir.
=Pycreus tremulus (Poir.) C.B. Clarke (1895)
=Pycreus macrostachyos subsp. tremulus (Poir.) Lye (1981)
=Cyperus argyraeus Steud. (1854)
=Cyperus chlorostachys Boeckeler (1864)
Taxon infra-specific
Pycreus macrostachyos (Lam.) J. Raynal var. macrostachyos
Pycreus macrostachyos var. tenuis (Boeckeler) Wickens (1976)
Pycreus macrostachyos (Lam.) J. Raynal subsp. macrostachyos
Ecology and distribution
Trop. Afr.
Biology : Annual herb; culms solitary or tufted, 15-82 cm tall, 1,6-6,2 mm Ø, trigonous, sometimes ± triquetrous, smooth, lower part covered by broad membranous reddish-brown leaf bases; leaf sheath rather loose, pale brown to dark brown, 2-13 cm long, base often reddish-purple; blade linear, 15-50 cm x 2,6-9 mm, acuminate, apex scabrid; inflorescence simple, or sometimes ± compound; spikelets in clusters on elongated axis at end of primary branches, at least one cluster sessile; primary branches 2-8, 1-15,5 cm long; spikelets linear, 10-30 to many per cluster, 0,8-2,5 cm x 1,7-2,5 mm (sometimes 3,5 cm long in fruit); glumes with a distinct white hyaline margin.
Ecology : Seasonal lakes and ponds; river edges, rice fields; other damp places; bare, humid to flooded sandy to clayey soils; hollows in dunes; sometimes in to 25 cm deep water; in or near rock pools; alluvial flooded plain; riverine forest; wooded grassland; 0-2000 m alt.
Biol./Eco : Herb; distribution: Mascarenes, Africa, Asia, Australasia/Pacific, New World,

Bibliography for Tropical Africa :
  • PEYRE DE FABRÈGUES B. & J. P. LEBRUN (1976). Catalogue des plantes vasculaires du Niger. Maison Alfort : 341
  • BOUDET G. & J.P. LEBRUN (1986). Catalogue des plantes vasculaires du Mali. Etudes et Synthèses IEMVT 16 : 363
  • Cat. Pl. Vasc. Burkina Faso:54 (2012)
  • DARBYSHIRE, I. KORDOFAMI, M. & AL. (2015). The plants of Sudan and South Sudan, An annoted checklist. Kew Publishing : 114
  • CÉSAR J. & C. CHATELAIN (2019). Flore illustrée du Tchad. Conservatoire et Jardin botaniques de Genève, Coopération Suisse & Univ. N'Djaména : 126
More info on :
see under Jstor_African Plant Initiative
see under Flore d'Afrique Centrale
see under The International Plant Name Index
see under Catalogue de Madagascar
see under African Plants - a Photo Guide
see under Missouri Botanical Garden
see under Flora of Zimbabwe
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Record n°175582 modified 2009-09-01
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